The image says Rihana biconica, but the newest name of this cicada is Diceroprocta biconica.

For the fun of it, here is a genus description for Rihana:

Characters. — Flead distinctly longer than half the breadth between eyes, and including eyes wider than base of mesonotum ; face more or less prominent, its lateral margins in line with lateral margins of vertex; eyes oblique, longer than broad; pronotum a little narrowed behind eyes, about or almost as long as mesonotum in front of cruciform elevation ; abdomen not, or scarcely, longer than length between apex of face and base of cruciform elevation ; other characters generally as in Cicada.

References:

The illustration and genus description comes from the journal Genera Insectorum, and a specific article from 1913 by W. L. Distant titled Homoptera. Fam. Cicadidae, Subfam, Cicadinae. Read it on the Biodiversity Heritage Library website.

Pacarina puella Davis, 1923 is a small cicada. About 2 centimeters, according to BugGuide.You can find this cicada in the several southern (United) States, Mexico, and Central America. It is commonly known as the Little Mesquite Cicada.

And its name has changed since 1914. It used to be known as Pacarina signifera (technically, its a synonym):

The image says Pacarina signifera but the newest name of this cicada is Pacarina puella.

Pacarina genus description by W. L. Distant:

Characters. — Head (including eyes) broader than base of mesonotum ; eyes projecting beyond anterior angles of pronotum ; vertex at area of ocelli much longer than front ; pronotum with the posterior angles moderately lobately produced, its lateral margins oblique, slightly sinuate, its length shorter than that of mesonotum ; abdomen about as long as space between apex of head and base of cruciform elevation; tympanal coverings distinct but inwardly concavely narrowed and exposing the tympanal cavities; face convex, a little broader than the space between it and eyes; opercula about reaching base of abdomen, their lateral margins oblique, their posterior margins a little rounded; anterior femora armed with two strong spines beneath; rostrum about reaching the posterior coxae; tegmina and wings hyaline; apical areas eight.

References:

The illustration comes from the journal Genera Insectorum, and a specific article from 1914 by W. L. Distant titled Homoptera. Fam. Cicadidae, Subfam, Gaeaninae. Read it on the Biodiversity Heritage Library website.

November 26, 2017

Cicada researcher Robert L. Sanders has written a paper documenting a 3-Year survey of Oklahoma cicadas. The paper is appropriately titled “A 3-Year Survey of Oklahoma Cicadas (Hemiptera: Cicadoidea: Cicadidae) with New State Records” and was published in Journal of the Kansas Entomological Society, 89(4):315-337. Access it via this link.

The number of cicadas identified living in Oklahoma has been raised to 41. The previous number, as documented in the works of Allen F. Sanborn and Polly K. Phillips, was 341.

Here’s the abstract of Robert’s paper:

ABSTRACT: Between September of 2013 and September of 2016 an intermittent survey of the cicada diversity and distribution in Oklahoma was conducted. The results of this survey are presented here as a current updated annotated checklist. Seven species in four genera are newly recorded as resident in Oklahoma: Diceroprocta texana (Davis, 1916), Megatibicen figuratus (Walker, 1858), Neotibicen davisi harnedi (Davis, 1918), Neotibicen linnei (Smith & Grossbeck, 1907), Neotibicen robinsonianus (Davis, 1922), Okanagana viridis Davis, 1918, and Pacarina shoemakeri Sanborn and Heath, 2012. This brings the total number of species inhabiting the state to 41. Discussed are seven additional species possibly occurring in the state and Oklahoma’s cicada diversity.

July 5, 2017

Dusk is the time of day between sunset and night. Many species of Megatibicen & Neotibicen (formerly Tibicen) sing at this time. I’m not sure why they sing at this time — perhaps it helps them avoid audio competition with other singing insects, or perhaps it helps them avoid predators by calling at this specific time of the day.

If you find yourself outdoors in the eastern half of the U.S. after sunset and hear a cicada call, it is likely one of the following Megatibicen or Neotibicen species:

May 31, 2017

A new subspecies of the Similar Dog-Day Cicada has been described in the paper A new Neotibicen cicada subspecies (Hemiptera: Cicadidae) from the southeastern USA forms hybrid zones with a widespread relative despite a divergent male calling song by David C. Marshall and Kathy B. R. Hill (Zootaxa, Vol 4272, No 4). The cicada is named Neotibicen similaris apalachicola.

This cicada lives in Florida, Georgia & Alabama, and hybridizes with the other Similar Dog-Day Cicada sub-speces, Neotibicen similaris similaris. The document is available on biotaxa.org.

A morphologically cryptic subspecies of Neotibicen similaris (Smith and Grossbeck) is described from forests of the Apalachicola region of the southeastern United States. Although the new form exhibits a highly distinctive male calling song, it hybridizes extensively where it meets populations of the nominate subspecies in parapatry, by which it is nearly surrounded. This is the first reported example of hybridization between North American nonperiodical cicadas. Acoustic and morphological characters are added to the original description of the nominate subspecies, and illustrations of complex hybrid song phenotypes are presented. The biogeography of N. similaris is discussed in light of historical changes in forest composition on the southeastern Coastal Plain.

1) Animals can hear the cicadas stirring underground, and will try to dig them up and eat them. Look for holes (about the size of a walnut or larger) made by animals digging for cicadas.

2) Look for cicadas under stones and slates. Some cicadas will burrow their way to the surface, but they hit a large stone or slate and can go no further.

If you find them in this situation, gently put the stone or slate back. They will usually find their way around the obstruction once the time is right.

One clue that a Magicicada nymph is not ready to emerge is their eyes are still white. Their eyes turn red/orange prior to emerging (a few retain a white/blue color).

3) Cicada holes are about the size of a dime. Cicadas preemptively dig holes to the surface and wait until the weather is nice enough for them to emerge. Sometimes you can see them down in the holes.

4) Cicadas form chimneys above their holes when the soil is moist or muddy. These chimneys might look like a simple golf ball sized dome or a structure over six inches tall.

Periodical cicadas typically won’t emerge until their body temperature reaches approximately 65 degrees Fahrenheit (17-19.5 Celsius1). Their bodies are warmed by surrounding soil or warm water from rain. A good rule of thumb is, if the soil 8 inches(20 cm) deep is 65°, the conditions are good that they might emerge.

This image represents the combined range of all Magicicada periodical cicada broods, including the extinct Broods XI (last recorded in Connecticut) and XXI (last recorded in Florida).

To produce this image, I visited John Cooley’s Magicicada.org Cicada Geospacial Data Clearinghouse and downloaded the Shapefile of Magicicada broods. Then I used the computer program QGIS to change the Shapefile to a KML file, and then I opened the file in Google Earth. Credit goes to John for pulling the data together into the Shapefile.

I manually edited the KML file to try to give each Brood a different color.

An interesting area is Fredrick County, where 5 different broods seem to exist (or have existed) at once.

The University of Michigan Cicada Pages (ummz.lsa.umich.edu) The premier North America cicada site, until Cicada Central and Magicicada.org came around. Magicicada, Tibicen, Okanagana, Diceroprocta. PHOTOSAUDIOMAPS

August 9, 2013

Now is a great time to look and listen for Tibicen cicadas in North America. Tibicen are the medium to large sized annual cicadas. Typically they are well camouflaged – with colors like black, white, green & brown.

During the day you can listen for them, of course, and spot them that way. Try Insect Singers for cicada songs. You can also look for their exuvia (skins), and if you’re lucky you can catch on on a low branch.

Last night I started looking around 10pm and found three Swamp Cicadas (T. tibicen tibicen) shedding their skins on trees around the yard. I also collected about 30 exuvia (skins). All in a quarter acre yard. Take a look at this video: